function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bauer, Aaron M.', 1],
    ['Chandramouli, S. R.', 1],
    ['Conradie, Werner & Bittencourt-Silva, Gabriela B.', 1],
    ['Figueroa, Alex & Low, Martyn E. Y. & Lim, Kelvin K. P.', 1],
    ['Hakim, Jonathan & Trageser, Scott J. & Ghose, Animesh', 1],
    ['Ineich, Ivan', 2],
    ['Ivanov, Martin', 2],
    ['Jablonski, Daniel & Khalili, Faizurrahman & Masroor, Rafaqat', 1],
    ['Kirchhof, Sebastian & Wasonga, Victor & Mazuch, Tomáš', 1],
    ['Segniagbeto, Gabriel Hoinsoude & Trape, Jean François', 3],
    ['Sánchez-Vialas, Alberto & Calvo-Revuelta, Marta', 3],
    ['Trape, Jean-François & Chirio, Laurent & Broadley, Donald G.', 2],
    ['Wallach, Van & Wüster, Wolfgang & Broadley, Donald G.', 2],
    ['Wüster, Wolfgang & Broadley, Donald G.', 2],
    ['Wüster, Wolfgang & Chirio, Laurent & Trape, Jean-François', 5],
    ['Other (7)', 7]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=35)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);